7591 Construct-a-Zurg is one of the sets from the first wave of LEGO Toy Story sets. It is made up of 118 pieces.
"Now you can build Buzz Lightyear’s arch-nemesis, the Evil Emperor Zurg! With his powerful sphere-shooting cannon and rotating waist, this poseable galactic overlord is more than ready to battle Buzz and his little green alien friend the next time they meet. Includes alien minifigure!"